<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body bgcolor="skyblue">
		<div align="center">
		<form action="I.jsp" method="post">
		圆的半径为:<input type="text" name="redius"><br>
		<input type="submit" name="提交">&nbsp;&nbsp;
		<input type="reset" name="重置"><br>
		<br>
		</form>
		</div>
</body>
</html>